Re: Hi, everybody. My data is FNL from NCEP. How to use NCL to plot skew plot using these data?

[1]
Please look at the file. The pressure levels are on the file.

[2] The skewT plots one vertical sounding

On 12/9/10 6:13 PM, 梁建宇 wrote:
> Hi, everybody.
> I want to draw skew -t plot using NCL . my data is grib1
> My problem is in order to use the function below, one should have the
> pressure information in every level .
> skewt_data = skewT_PlotData (wks, skewt_bkgd, p,tc,tdc,z \
> , wspd,wdir, dataOpts)
> Firs, I convert grib1 to netcdf file, and then
> I use commands below to indicate the variable name except the pressure.
> tc=fin->TMP_3_ISBL_10
> u=fin->U_GRD_3_ISBL_10
> v=fin->V_GRD_3_ISBL_10
> z=fin->HGT_3_ISBL_10
> rh= fin->R_H_3_ISBL_10
> How to deal with pressure?
> PS: my FNL is grib1 type. seems that it did not have pressure
> information in every level. But in the ctl file for GrADS , it has such
> lines
> zdef 26 levels
> 1000 975 950 925 900 850 800 750 700 650 600 550 500 450 400 350 300 250
> 200 150 100 70 50 30 20 10
> How can I create the pressure information in NCL? Is anybody has the
> code to do that , I will be very greatful if you can provide it to me.
>
>
>
>
>
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Received on Thu Dec 9 21:01:24 2010